import java.io.*;
class count{

    int num;
    String on;
    String en;
    //String num1;
   // void result(){
     ///   System.out.println("The num is "+on);
       // System.out.println("The num is "+en);
  //  }
   // public void setnumber(){
          //  if (num%2>0){
         // //  
                
            
          // }
           // }
}

    public  class accout{
     
            public static void main() throws IOException
            {
                count rect1=new count();
               // rect1.num;
                rect1.on="odd number";
                rect1.en="even number";
                String str;
                BufferedReader buf;
                
                buf = new BufferedReader(new InputStreamReader (System.in));
                
                System.out.println("Input a number: ");
                str = buf.readLine();
                rect1.num=Integer.parseInt(str);
              
                
                if ((rect1.num>0 )&& (rect1.num % 2==0) ){
                     

                   
                    System.out.println("The num is "+rect1.en);
                    
                }
                else 
                    System.out.println("The num is "+rect1.on);
                
            
            }
    
    }

why wrote:
> 写一程序，用以判断一个五位整数N的各位数字的奇偶性，并求出它们的和，运行结果提示：
> 偶数个数：2
> 奇数个数：3
Where is 它们的和?

> (100<a)&&(a<1000)&&(b==0)?"A":"B"
Now, not matter n is odd or even, it will result in "B" when n is out of the range.

binge wrote:
额外的一个问题，本论坛里的代码不能COPY啊！
没有自动换。

package net.cjsdn.why;

public class JudgeOddEven {
  private int inputNumber;
  private int[] digits;
  private int numDigits = 5;
  private int countOdd = 0;
  private int countEven = 0;
  private int sumOfDigits = 0;

  public JudgeOddEven() {
    digits = new int[numDigits];
  }

  public JudgeOddEven(int numDigits) {
    if (numDigits >= 1) {
      this.numDigits = numDigits;
    }
    this.digits = new int[numDigits];
  }

  public int getCountEven() {
    return countEven;
  }

  public int getCountOdd() {
    return countOdd;
  }

  public int getSumOfDigits() {
    return sumOfDigits;
  }

  public int getInputNumber() {
    return inputNumber;
  }

  public void setInputNumber(int number) {
    //TODO: check whether number has the correct number of digits
    inputNumber = number;
    sumOfDigits = 0;
    countEven = 0;
    countOdd = 0;
    
    //TODO: comment on div1 & div2
    for (int i = 0, div1 = 1, div2 = 10; i < numDigits; i++) {
      digits[i] = (inputNumber % div2) / div1;
      div1 = div2;
      div2 *= 10;

      sumOfDigits += digits[i];
        
      if ((digits[i] % 2) == 0) {
        countEven++;
      } else {
        countOdd++;
      }
    }  
  }

  public void printResult() {
    System.out.println("数字：" + inputNumber);
    System.out.println("偶数个数：" + countEven);
    System.out.println("奇数个数：" + countOdd);
    System.out.println("各位数字的和" + sumOfDigits);  
  }
  
  public static void main(String[] args) {
    JudgeOddEven joe = new JudgeOddEven(5);
    joe.setInputNumber(12345);
    joe.printResult();
  }
}

joe031102 wrote:
元老果然就是元老，。谢谢你的指点。我继续努力，嘿嘿。